Cubix: Robots for Everyone

Season 1, Episode 3: The Underground of Bubbletown

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When the power keeps cutting out in Bubble Town, Abby decides to take matters into her own hands and catch the culprit. The rest of the Botties join her mission and soon they are led into Bubble Town's sewer system - Sewwix is the offender. Soon enough Dr. K and Kolossal show up and manage to break a gas main - sending the Botties on a race to save Sewwix, get Solex, and save Bubble Town from exploding!